This sounds like it could be a sebaceous cyst or an abscess that popped on its own.
Since the Doctor advised you to keep an eye on it ,I would go back to him/her to receive further treatment.
In my opinion you would need antibiotics and perhaps more drainage procedure to clear the infection.
Please call your doctor as soon as possible to resolve this problem.
i have an appointment set up for Monday so I will make sure to keep you posted on the outcome. I will ask them about the suggestions you made to see if that could be it. Thank you!
You are welcome :)
I am glad you’ll be seeing your Doctor soon.Yes please keep us updated and I hope that you’ll have nothing to worry about.
All the best to you…